[ballenf]

Just based on MacBook vs. iPhone sales numbers, Apple sells 40 iPhones for every laptop. Most iPhone owners don't have an Apple laptop.

Numbers from 2018: 217M iPhones, 5M laptops:

https://www.statista.com/topics/847/apple/

[stouset]

Most people hold onto their laptops for longer than they go between phone upgrades. And many (most? all?) laptop manufactures have USB-C ports on their devices these days, all of which can be used to charge your phone.